R. V. Khobare, R. P. Pawar, K. D. Warad, A. P. Tayde, and C. B. Mane, “Synthesis and Antibacterial Activity of 4,4’-(Arylmethylene)Bis(3-Methyl-1- Phenyl-1H-Pyrazol-5-Ol) Derivatives in Presence Ce(SO4)2.4H2O as a Catalyst Under Solvent free Condition using Ultrasonication Technique”, rajar, vol. 6, no. 02, pp. 2651–2653, Feb. 2020.